socket.h

LINUX下发送邮件的库,测试很好用,有各种发送测试的例子

/*************************************************************************
 *                                                                       *
 * This program is free software; you can redistribute it and/or modify  *
 * it under the terms of the GNU General Public License as published by  *
 * the Free Software Foundation; either version 2 of the License, or     *
 * (at your option) any later version.                                   *
 *                                                                       *
 *************************************************************************/

#ifndef _SOCKET_H__
#define _SOCKET_H__

#include "global.h"
#include "exception.h"
#include "logger.h"
#include "i18n.h"
#include <unistd.h>
#include <arpa/inet.h>
#include <netdb.h>
#include <sys/socket.h>
#include <sys/time.h>
#include <netinet/in.h>
#include <errno.h>
#include <string>

using namespace std;

/**
 * This class describes a socket.
 * This class is intended to be a base class for more specific
 * socket implementations, eg. tcp sockets or unix domain
 * sockets. Consequently it is a virtual class that cannot 
 * be instantiated.
 *
 * @author Timo Benk <[e-mail]>
 */
class Socket : public Logger
{
	public:    
		/**
		 * Constructor.
		 *
		 * @param host The host this socket is connected to.
		 */
		Socket (const string &host);

		/**
		 * Constructor.
		 *
		 * @param host The host this socket is connected to.
		 * @param fd   The file descriptor this socket uses for IO.
		 */
		Socket (const string &host, int fd);

		/**
		 * Destructor.
		 */
		virtual ~Socket ();

	protected:

		/**
		 * The host that we want to connect to.
		 */
		string host;
		
		/**
		 * The socket file descriptor this socket uses for IO.
		 */
		int sockfd;

	public:
		/**
		 * Connect this socket.
		 */
		virtual void connect () = 0;

		/**
		 * Returns the name of the localhost or the
		 * string "localhost" if something goes wrong.
		 *
		 * @returns The name of the localhost or localhost.
		 */
		string localhost ();

		/**
		 * Reads one line from the socket.
		 *
		 * @returns One line read from the socket.
		 *
		 * @throws TransferException 
		 *             On any uncommon event that occurs while receiving
		 *             the data.
		 */
		string readSocket ();

		/**
		 * Writes data to the socket.
		 *
		 * @param data The data string that should be written to 
		 *             the socket.
		 *
		 * @throws TransferException 
		 *             On any uncommon event that occurs while sending
		 *             the data.
		 */
		void writeSocket (const string &data);
};

#endif